What is Hiroshi Kobayashi's record?

61–10–4 in boxing. That is the aggregate stated in the English Wikipedia infobox; the results table on the same article lists 74 bouts individually.

Does a no contest change a record here?

No. A no contest is not a win, a loss or a draw, and it is never folded into one. It is counted and printed separately, so a 20–0 record with two no contests is shown as exactly that rather than as 22–0 or as 20–0 with the no contests dropped. The same applies to a bout overturned after the fact where the source records the change.

What happens when sources disagree about a fight?

This site publishes one source — the fighter's English Wikipedia article, read on the date printed under every table — and it does not silently reconcile that against anyone else's database. Where the article's own infobox total and its own results table disagree, both are shown and the page says which one each figure came from. Nothing is averaged, and no field is filled in from a second source to make a total balance.

Hiroshi Kobayashi — record, reach and career in context

Boxing record

61–10–4

Hiroshi Kobayashi finished 16% of 61 wins inside the distance — the 2nd percentile for super featherweight boxing, where the median is 57%. No reach is on record, so this page compares record rather than measurements.

WON ABOVE·LOST BELOW BAR = STOPPAGE·BROKEN BAR = SUBMISSION·TICK = DECISION 1962–1971

SOURCE·Hiroshi Kobayashi (boxer) — English Wikipedia (CC BY-SA 4.0)·derived figures computed here·REVIEWED 2026-07-08

How this record is compiled

Measurements come from the fighter's English Wikipedia infobox; the bout list is parsed from the results table on the same article, read on 2026-07-08. Boxing tables are read by header name and MMA records by the fixed column order of the MMA record template — two different parsers, because reading MMA rows as a boxing table returns a fighter's boxing record in place of their real one.
A bout enters the ledger with whatever fields the source states: result, opponent, method, round, year. Any field the source leaves empty stays empty here. A date that cannot be established is left blank rather than inferred, and the bout is still counted.
A no contest is counted and printed as a no contest. It is never folded into the wins, the losses or the draws, and it never disappears to make a total balance.
Where the article's infobox total disagrees with its own results table, both figures are published and each is labelled with where it came from. Nothing is averaged and nothing is reconciled against a second database.
Percentiles rank this fighter among the 142 super featherweight boxing fighters in the dataset — the most specific group of at least 30 that this fighter belongs to.

Sources, exclusions and known limits →

Bout record

Every bout the article's own results table lists, in order. A dash is a field the source leaves empty — it is not a zero and it is not a guess.

Bout-by-bout recordAUG 2026
Year	Result	Opponent	Method	Rd
1971	L	Roberto Durán	KO/TKO	7
1971	L	Alfredo Marcano	KO/TKO	10
1971	W	Ricardo Arredondo	Decision	15
1970	W	Shozo Saijo	Decision	10
1970	W	Antonio Amaya	Decision	15
1970	W	Ray Adigun	Decision	10
1970	D	Hiroshi Shoji	Decision	10
1969	W	Carlos Cañete	Decision	15
1969	W	Victor Ramos	KO/TKO	2
1969	W	Antonio Amaya	Decision	15
1969	W	Turori George	Decision	10
1968	W	Jaime Valladares	Decision	15
1968	L	Rubén Navarro	Decision	10
1968	W	Ulises Botero	KO/TKO	6
1968	L	Mando Ramos	Decision	10
1968	D	Rene Barrientos	Decision	15
1967	W	Yoshiaki Numata	KO/TKO	12
1967	W	Ki Jin Song	KO/TKO	8
1967	W	Chang Soo Yun	KO/TKO	7
1967	W	Dony Tesorio	Decision	10
1967	W	Takao Mitsuhashi	Decision	10
1967	W	Vicente Milan Derado	Decision	10
1967	W	Kang Il Suh	Decision	10
1967	W	Chun Kyo Shin	Decision	10
1966	W	Del Kid Rosario	Decision	10
1966	W	Sumio Nobata	Decision	10
1966	W	Nobuo Chiba	Decision	10
1966	W	Bobby Valdez	KO/TKO	7
1966	W	Delfino Rosales	KO/TKO	9
1966	D	Aurelio Cazares	Decision	10
1966	L	Pedro Gómez	KO/TKO	7
1966	L	Freddie Rengifo	Decision	10
1966	D	Jaime Valladares	Decision	10
1966	W	Hiroshi Mori	Decision	10
1966	W	Shigeo Shioyama	Decision	10
1966	W	Katsutoshi Aoki	Decision	10
1965	W	Orlando Medina	Decision	10
1965	W	Sugar Cane Carreon	Decision	10
1965	W	Hyun Kim	Decision	10
1965	W	Atsushi Gunji	Decision	10
1965	W	Kunio Sakata	Decision	10
1965	W	Jong Tae Lim	Decision	10
1965	W	Shigeo Shioyama	Decision	10
1965	W	Soo Bok Kwon	KO/TKO	7
1965	W	Yuji Masuko	Decision	10
1964	W	Hyun Kim	Decision	10
1964	W	Atsushi Gunji	Decision	10
1964	W	Yuji Masuko	Decision	10
1964	W	Dong Chun Lee	Decision	10
1964	W	Kwang Joo Lee	Decision	10
1964	W	Mitsunori Seki	Decision	10
1964	W	Porte Villa	Decision	10
1964	L	Eduardo Guerrero	Decision	10
1964	L	Kang Il Suh	Decision	10
1963	L	Johnny Jamito	KO/TKO	6
1963	L	Manzo Kikuchi	Decision	10
1963	W	Toshio Shibazaki	Decision	8
1963	W	Dommy Balajada	Decision	10
1963	W	Yuji Masuko	KO/TKO	2
1963	W	Teruo Hino	Decision	8

Showing 60 of 74 recorded bouts, most recent first.

7 of these opponents have their own page here.

SOURCE·Hiroshi Kobayashi (boxer) — English Wikipedia (CC BY-SA 4.0)·derived figures computed here·REVIEWED 2026-07-08

What is on record

Measurements
Reach	not recorded
Height	66″ (167.6 cm)
Stance	Orthodox
Division	Super Featherweight Boxing competed at 2: featherweight, super featherweight — compared here against the last
Most active decade	1960s — 67 of 74 dated bouts
Country	Japan

Wikipedia carries no reach figure for Hiroshi Kobayashi, so the reach-advantage comparison this site is built on cannot be computed. Everything below comes from the record instead.

winlossdraw / NC1962–1971

Record

Boxing record

61–10

75 bouts on record

Finish rate

16%

of wins ended inside the distance — super featherweight boxing median 57%, 2nd percentile

By knockout 16%
By decision 84%

The career, bout by bout

74 recorded bouts from 1962 to 1971. Every incumbent shows this as a table you have to read; here it is as a shape you can see.

Career span

10y

1962–1971

Longest unbeaten run

15

without a loss — draws do not break it

Busiest year

1966

12 bouts

Recorded bouts

74

74 with a date

Standing questions

What this record does and does not say

What is Hiroshi Kobayashi's record?: 61–10–4 in boxing. That is the aggregate stated in the English Wikipedia infobox; the results table on the same article lists 74 bouts individually.
Does a no contest change a record here?: No. A no contest is not a win, a loss or a draw, and it is never folded into one. It is counted and printed separately, so a 20–0 record with two no contests is shown as exactly that rather than as 22–0 or as 20–0 with the no contests dropped. The same applies to a bout overturned after the fact where the source records the change.
What happens when sources disagree about a fight?: This site publishes one source — the fighter's English Wikipedia article, read on the date printed under every table — and it does not silently reconcile that against anyone else's database. Where the article's own infobox total and its own results table disagree, both are shown and the page says which one each figure came from. Nothing is averaged, and no field is filled in from a second source to make a total balance.

Cross-references

Super featherweight boxing

The 146 super featherweight boxing fighters this record is ranked against, and the distribution Kobayashi sits inside.

146 FIGHTERS 1960s boxing

67 of these bouts fall in the 1960s. This is what the rest of that decade's records look like.

72 FIGHTERS Hiroshi Kobayashi vs Roberto Durán

A bout both records confirm — set out side by side, with every opponent the two men have in common.

1971 Longest unbeaten runs

Hiroshi Kobayashi went 15 without a loss. This is where that sits against every run on the site.

LEADERBOARD